Total agreement to wynne
Yes, good/evil law/chaos exist in the DnD universe, but it is very hard to put an alignment label on each possible action that makes sense.
I agree with Vic that P:K was one of the better implementations of alignment, but there were still some times where I was confused why action a was considered as alignment b.
There are games that show interesting good/evil law/chaos stuff without having an alignment system.
The Witcher series is fantastic. There is lots of bad stuff happening and your actions have consequences, but the game does not put a good/evil label on it.
It is a world full of murder, incest, racism, torture and so on and every group is plotting against other groups.
Do you help a racist king who is burning heretics alive to fight criminals in order to establish law and order or do you help criminals to fight the king in order to end public executions, racism and high taxes and the criminals can finally sell drugs weapons and slaves without being stopped by the guards.
The game does not judge your actions by calling them good/evil law/chaos, it simply shows you the consequences of your actions and the player has to decide himself if it was the right choice.
I am playing Trails of cold Steel 3 at the moment.
One thing I like about the series is that your enemies are shown as people, not just monsters.
By DnD standarts your main char is lawful good and most of your enemies are evil. But sometimes your enemies are shown as having feelings, friends, motivations and conflicts just like every other person too.
I think its good when you can say to an enemy: "Listen, I know what you want to do, I can understand your motivation and from your point of view it makes some sense. But I still have to stop you because your actions cause harm to others or because my government has given me the order to stop you."
I like it when games can create some empathy for evil characters. You do not need to like them, it should only be shown that evil people are people too and they can have a motivation or a background that makes some sense, not just some freaks who kill and torture everyone just because evil.

Prof. Dr. Dr. Mad S. Tist

World leading expert of artificial stupidity.
Because there are too many people who work on artificial intelligence already